If you look at the course descriptions/listing, you will notice that Bio 1A03 is still the same, while Bio 1AA3 has been removed and replaced with Bio 1M03, whose description is close to 1AA3 but not quite. Also where Bio 1M03 is a requisite of some sort, 1AA3 is also accepted. From there, I concluded that 1M03 and 1AA3 are equivalent
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And yes, 1A03 and 1AA3 (now 1M03) have now switched terms as well. There are so many changes to the Science department this year o.0!